URUMQI, June 17, 2016 (Xinhua) -- People take photos in front of ornamental stones during the 9th Xinjiang International Ornamental Stone Hetian Jade Fine Collection Expo in Xinjiang International Convention and Exhibition Center in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, June 17, 2016. The event started on Friday and will last till June 28, attracting more than 1,600 exhibitors with thousands of displayed items. (Xinhua/Wang Fei)